Born in London Thomas Pentycross was exhibitioner at Christ's Hospital before attending Pembroke College, Cambridge University (B.A. 1771, M.A. 1774). At Cambridge he was acquainted with Thomas Gray and Horace Walpole, how printed one of his poems at the press at Strawberry Hill. Walpole did not approve of the poet's later turn to Methodism. Pentycross was curate of Horley (1771) and rector of St. Mary's Wallingford, near Cambridge (1774-1808). His poem Witenham-hill (1777) received a third edition in 1812.
The certainty of future punishments considered; or, the sinner's hopes of final impunity examined. Two discourses. 1777.
Witenham-hill: a descriptive poem. 1777.
Sermons speculative, practical, and experimental. 1781?
A sermon, at the funeral of Mrs. Ann Walcott, ... Delivered in the Countess of Huntingdon's Chapel. 1782.
The consecration of banners: a sermon, preached at the presentation of colours to the Wallingford Loyal Association. 1798.